Grease-cup.



O.ZERK. GREASE CUP. APPLICATION FILED JuLY3l.1913.

lfig fiwo Patented Ap 1.10,1917.

i w 2/ q} 3 1 11W av /6 la 4 i l 4 f/ZYEEEES UME MAW Ar ana nron OSCAR ZEBK, or CLEVELAND, onro, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 GEORGE w. BOW-EN, 0E AUBURN, NEW YORK.

GREASE-CUP.

Specification bf Letters Patent.

Patented Apr. 111, 1917.

Application filed July 31, 1913. Serial No. 782,177.

To all whom it may concern."

Be it known that I, OSCAR ZERK, a subject of the Emperor of Austria-Hungary, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Grease- Cups, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

The object of this invention is to provide a very simple and eflicient grease cupone in which the parts may be very cheaply manufactured and which, when assembled, will be eflicient and durable in use. To this end I have provided a stamped base having an angular exterior and a correspondingly angular interior, a cap screwing onto the base, and a spring carried by the cap and cooperating with the angular interior of the base. By this means the exterior of the base is properly formed to receive a wrench for screwing the base into place, while the interior eoacts with the spring to form a lock preventing displacement of the cap. The invention is hereinafter more fully explained and its essential characteristics are summarized in the claim.

In the drawings, Figure 1 is a side elevation of my grease cup; Fig. 2 is a vertical central section thereof; Fig. 3 is a horizontal 'cross sectionlooking downward, as indicated by the line 33 on Fig. 2; Fig. 4; is a horizontal cross section looking upward, as indicated by the line 4- 1 on Fig. 2.

The drawings show my grease cup as consisting of but four parts, namely; a base portion 1, a cap 2 screw-threaded thereon, a locking spring 3 coacting with the base, and a rivet 1 securing the spring to the cap. These parts will now be described.

The base 1 is designed to be stamped from sheet metal and consists of the following parts, namely; the externally threaded nipple 10 having an internal bore 11, the body portion 12, which is shown as hexagonal, both on its exterior and on its interior, as shown at 13. Above the hexagonal wall 12 is an elongated head 14, which stands out from the body portion and has threads 15 at its edge. The upper end of the hexagonal bore 13 flares, or is chamfered, as shown at 16.

The cap 3 is shown as having a cylindrical wall internally threaded at 21 and having a fiat top 22 and suitable external nurling 23.

The spring 3 is a U-shaped member having its ends provided with outward beads or bulges 30 and its intermediate portion somewhat enlarged, as shown at 32 in Fig. 1. Through this enlargement is an opening, which is occupied by the rivet 4 securing the spring to the top of the cap. This rivet is preferably countersunk within the-top of the cap, as shown in Fig. 2.

It Will be seen that the hexagonal exterior 12 of the base furnishes convenient means by which a wrench may screw the nipple portion 10 into a suitable receiving opening. After the base is in place, the cap is filled with grease and screwed onto the base. In this motion, the spring arms first engage the bevel 16 of the base and are forced inwardly so that they pass into the hexagonal bore 13 as the cap is screwed downwardly to feed the grease. In this movement, the arm coacts with the mangles provided by the hexagonal bore to form a lock preventing inadvertent displacement of the cap. The spring action of the arm 3 enables the cap to be screwed on, as necessary, to feed the grease, but, as each angle of the bore is reached, the tendency is to hold the cap at this point, so that it does not work loose when left standing at any of the positions defined by the angles of the bore.

As heretofore stated, the base may conveniently be made by stamping. To this end I have provided the particular form of base shown. That is, the parallel walls in the interior and exterior of the bore adapt the base for convenient stamping, and the extended head 14 is easily produced by upsetting the end of the base and provides material for carrying the necessary threads. The

chamfering 16 is also conveniently accomplished by the stamping operation. The cap and spring are cheaply constructed and the spring easily secured to the cap.

Having thus described my invention, what I claim is:

In a grease cup, the combination of a base having a stem formed with similarly shaped angular interior and exterior surfaces to provide a wrench hold and an interior ratcheting surface, a cap threading on the base, my signature in the presence of two Witand a lsFrirlllg tongue carried by the cap zzfmd nesses. rotata e t ereWith an pressing at its ree end against the inner angular face of the OSCAR ZERK' 5 bore of the base, substantially as and for the Witnesses:

purpose set forth. BRENNAN B. WEST, In testimony whereof, I hereunto affix ALBERT H. BATES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. G. 

